Metro area in Idaho
Twin Falls, ID
The Twin Falls metro area authorized 670 new housing units in 2025. Buildings with five or more units accounted for 5.5% of the units authorized in 2021–2025, the lowest share among the 6 metro areas based in Idaho. Recent building has not returned to boom levels: the 2021–2025 yearly average was 31% below the 2004–2006 average, the weakest recovery by this measure among the 6 metro areas based in Idaho.
Single-family2–4 units5+ units
Its 2025 total was only 57% of the 2005 high of 1,179 units, the furthest below a series peak among the 6 metro areas based in Idaho.
Houses or apartments
The closest match in building mix among the 386 other metro areas is Florence, SC (5.6% in five-plus buildings). Duplexes to fourplexes are unusually common here: 8.3% of units, against 3.5% nationally. Units in five-plus buildings peaked in 2022 (100), single-family houses in 2005 (1,047).
Busiest permit offices
Across the metro area, 11 permit offices authorized new housing in 2021–2025. The busiest was Twin Falls, with 1,636 units or 46% of the total, followed by Twin Falls County (unincorporated) with 670.
Share of the units authorized in the metro area, 2021–2025.
Boom, bust and since
Its peak year is shared by 105 other metro areas, among them Glens Falls, Sierra Vista, Ames. Annual permits fell from 1,179 during the mid-2000s boom to 206 in 2011, a drop of 82%. The nearest bust profile in the Mountain states was Greeley's (83%). Permits rose 10 years in a row up to 2021. From 2024 to 2025 the count fell 8.6%.
Relative to population
With 123,901 residents in July 2025, Twin Falls authorized 5.8 units per 1,000 residents a year in 2021–2025, 1.3 times the national 4.7. The metro areas with the nearest rates are Bellingham (5.8) and Indianapolis (5.8).
Where in the metro
Twin Falls County accounted for 84% of the metro area's units in 2021–2025, Jerome County for 16%.
Similar in size
| Metro area | 2004–2025 | 2025 units | Per 1,000 a year | 5+ share |
|---|---|---|---|---|
| Mansfield, OH | 114 | 1.2 | 8.4% | |
| Glens Falls, NY | 327 | 2.5 | 18% | |
| Twin Falls, ID | 670 | 5.8 | 5.5% | |
| Goldsboro, NC | 954 | 5.0 | 4.2% | |
| San Angelo, TX | 335 | 2.4 | 0% |
Rates and shares: 2021–2025.
Every yearly figure behind the chart, split by building size: yearly-units.csv. State view: Idaho. Counting rules.